Roiland, who voices both Rick and Morty, admits that the creation of the line was one of those rare moments that couldn’t be scripted, almost literally. It was actually a parenthesis in the script, an aside to explain the action of Rick on the screen. The script depicted Rick falling to the ground to spin in a circle, mimicking an icon Three Stooges moment. The script described it with the phrase “wub wub wub wub wub”. Not exactly specific, but it kind of creates a visual.
Roiland explained what happened next in an interview with VICE. “In the recording, it was a last minute rewrite that I didn’t read,” he admits. “I just did it wrong. I completely ignored what was scripted.”
Of course, this wouldn’t be the first time in television history that a script has gone out the window and an improvised and unexpected moment has taken its place. In fact, this is the way many classic scenes came. When Jack stands at the bow of the “Titanic” and shouts, “I am the king of the world”, it was all Leonardo DiCaprio. The famous “Are you talking to me?” scene from “Taxi Driver” was improvised by Robert De Niro. Director Taika Waititi even estimates that 80% of “Thor: Ragnarok” leaned into the freedom of improvisation and allowed the actors to adjust their lines.